No Three in a Row Sudoku by Bill Murphy
(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
The “No Three in a Row” pattern to avoid in this puzzle is any stretch of three evens or three odds in a vertical or horizontal direction.
Updated 7 AM PT: Due to a miscommunication in the shared tracking spreadsheet with GAS, we initially posted a version of this earlier No Three in a Row Sudoku by Bill, still fun to solve but not a new grid. Today’s puzzle, with a same day test by Thomas, has been posted with this update.
or solve online (using SudokuPad)
Author/Opus: This is the 33rd puzzle from Bill Murphy, part of the Genuinely Approachable Sudoku (GAS) team.
Rules: Standard Sudoku rules (Insert a number from 1 to 9 into each cell so that no number repeats in any row, column, or bold region). Also, there may not exist a run of three or more cells horizontally or vertically in the grid that all contain numbers of the same parity (i.e., even or odd).
GAS Time Standards (highlight to view): Two party hats (🎩🥳): 7:30; One party hat (🥳): 14:00. All other solvers earn a 🦕: Go Middle Guaibasaurus.
Thomas Hits the GAS (highlight to view): 2:25, with SudokuPad replay file shared as a download for now (requires loading via settings menu with improvements expected before people should use this regularly).
Solution: PDF; solving video with explanation to be added later from GAS team.
Note: Follow this link for other less common variations of Sudoku.
Note 2: Comments on the blog are great! For a more interactive discussion, please also consider using our Daily GAS discussion post on the GMPuzzles Discord. Not a member of the Discord? Click this link for basic access.